Intake-manifold



B. IVOR.

INTAKE MANIFOLD.

APPLICATION FILED rum/21, 1920.

Patented Nov. 1, 1921.

INVE/VTOR A TTOR/VEV UNITED STATES BARRY IVOR, OF CHICAGO, ILLINOIS.

INTAKE-MANIFOLD.

Specification of Letters Patent.

Patented Nov. 1, 1921.

Application filed May 21, 1920. Serial No. 383,262.

To all whom it may concern.

Be it known that I, BARRY Ivon, a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in an Intake-Manifold, of which thefollowing is a specification.

This invention relates to improvements in means for heating andvaporizing the explosive mixture employed in internal combustion motorsor engines, precedent to the passage of such mixture into the explosionchambers of the engine cylinders, and it consists in certainpeculiarities of the construction, novel arrangement, combination andoperation of the various parts thereof as will be hereinafter more fullyset forth and specifically claimed.

The principle object of the invention is to provide an intake manifoldfor internal combustion engines, employed for general' purposes, and ofany suitable kind, but usually of the multi cylinder type, which shallbe simple and inexpensive in construction, strong, durable and highlyeflicient in operation, with its parts so constructed and arranged withrespect to one another that they can be easily assembled and readilyconnected to an engine, or detached therefrom and disassembled forrepairs or for cleaning the same.

A further object is to provide an intake manifold of the above mentionedgeneral character, which shall be of vsuch construction and operation ofits parts, that, the explosive mixture will not only be preheated andvaporized thereby, before its delivery to the explosion chambers of theengine, but will be supplied to said chambers under considerable forceor pressure and in a whirling movement, thus preventing lean mixture orcharges and reducing to a minimum danger incident to back firing.

Still another object is to provide the manifold with automatic means foratomizing the mixture as it enters the mixing chamber of the device andfor causing its thorough vaporization therein.

A still further object is to afford an intake manifold which willmaintain the explosive mixture at a constant or uniform temperature,thereby avoiding the troubles or difiiculties incident to the changes inweather and atmospheric conditions.

Other objects and advantages of the invention will be disclosed. in thefollowing description and explanation.

In the accompanying drawing forming a part of this specification, thefigure is a view in elevation of so much of an internal combustionengine and its appurtenances as is necessary to illustrate theinvention, showing my intake manifold in longitudinal vertical section.and in operative connection therewith.

Referring now to said drawing, the reference numeral 1 designates theexplosion chamber portion, of an internal combustion engine, 2 theexhaust pipe for products of combustion, 3 a portion of a pipe leadingfrom a carbureter (not shown) and 4: my improved intake manifold, as awhole. All of these elements, except the manifold, are preferably of theconventional type, though they may be of any other constructioncompatible with the purpose of my invention without involving departurefrom the scope of the same as claimed.

As shown, the manifold 4 consists of a casing made of two oppositelytapered members 5 and 6 each of which has in its outer end an opening 7in one of which openings is fitted one end of a pipe 8 leading to andcommunicating with the exhaust pipe 2 near its discharging end. Thispipe 8 is by preference provided with a shut-off valve 9 for the purposeto be presently explained. Fitted in the discharging opening 7 of themember 6 of the manifold casing is another pipe'lO which may lead to theatmosphere, or if desired, it can be tapped into the exhaust dischargepipe.

The inner ends of the members 5 and 6 of the casing are provided withperipheral flanges 11 which are outwardly curved from their juncturewith the body portions of the members 5 and 6 but are provided outwardlyat their meeting edges with flanges or lips 12 which are securedtogether by means of bolts and nuts 13 as will be readily understood byreference to the drawing. The lower portion of each of the members 5 and6 is provided at the inner end thereof with a horizontally extendedapertured flange 14 which is secured by means of bolts 15 to a similarlydisposed flange 16 on the upper portion of the pipe 3 which leads fromthe carbureter. By this arrangement it is apparent that the casing ofthe manifold will be supported horizontally in a secure manner near theexplosion chambers of the engine, and that a somewhat enlarged chamber17 having communication with the pipe 3 will be provided at the middleof the casing of the manifold.

Leading from the surface of each of the members 5 and 6 adjacent to theengine 1 near the outer end of each is a conduit or pipe 18 whichcommunicates with the intake valves of the engine cylinders in theordinary and well known way. Located in the casing members 5 and 6 aretapered plugs or members 19 and 20 respectively, which as shown arehollow or cored out and have their tapered ends disposed in opposite d1-rections. The outer ends of the tapered plugs or members 19 and 20 areprovided with nipples or projections 21 which are located and suitablysecured in the openings 7 of the casing members 5 and 6 in communicationwith the pipes 8 and 10 as shown.

One of the plugs or members, in the present instance the plug 19, isprovided at its inner end with a hollow and-internally screw-threadedextension 22 into which is screwed or fitted a similar extension ortubular projection 23 on the inner end of the plug or member 20, whicharrangement unites the plugs at their inner ends but in such a manner asto hold the main portion of said ends in spaced relation to one another,which space coincides with the chamber 17 provided by the flanges 11 onthe casing members 5 and 6 of the manifold. Each of the plugs 19 and 20is provided externally thereof with a convolute or spiral rib 21 whichtapers from the inner ends to the outer ends of the plugs or members 20and form between their convolutions spiral channels 25.which are bypreference of the same size as the area of the intake valve openings inthe cylinders with which they communicate. As shown, the ribs 24 arehollow and are of sufficient size to fit snugly against the innersurface of the casing members 5 and 6 when the plugs 19 and 20 arepositioned therein.

Vertically mounted on the extensions 22 and 23 of the inner ends of theplugs 19 and 20 and by preference depending therefrom is a shaft 26which carries a fan 27 of the ordinary or any well known constructionwhich will be caused to rotate by the passage of the mixture from thecarbureter through the pipe 3 into the mixture chamber 17 of themanifold, which operation will atomize the mixture and cause it tocontact with the heated extensions 22 and 23 of the plugs or members andthus thoroughly vaporize the mixture. It is'manifest that as the exhaustis discharged through the exhaust pipe 2 a portion thereof will bedeflected through the pipe 8 and will pass from thence through the coredor hollow plugs 19 and 20 and from the latter out through the pipe 10when the same is employed. As the ribs 24 are hollow, it is evident thattheir walls will be subjected to the heat of the exhaust as it passesthrough the plugs and thus greater radiation will be afforded.

In the operation of the engine the explosive mixture will be drawn fromthe carbureter through the pipe 3 into the mixing chamber 17 of themanifold from which chamber it will be caused to pass with increasingvelocity and with a whirling movement from the larger ends of the casingmembers through the, pipes or'conduits 18 into the explosion chambers ofthe engine. By reason of the velocity, as well as whirling motion of themixture as it enters the explosion chambers of the engine, lean chargesof the mixture will be prevented and lodgment on the walls of themanifold of hydrocarbon oils will be prevented.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is l. A device of the character described,

consisting of a casing tapered from its middle portion toward each ofits ends and having communication near each of its ends with anexplosion chamber of an internal combustion engine, a pair of hollowexternally tapered plugs communicating with one another and locatedwithin the casing with their tapered portions coinciding with the taperof the casing, each of said plugs having an opening in its outer end andeach provided on its outer surface with a spaced convolute rib incontact with the walls of the casing, a pipe leading from a supply ofheat and communicating at one of its ends with the end of one of saidplugs, and a pipe communicating at one of its ends with the casingbetween the adjacent ends of the plugs and at its other end with asupply of explosive mixture. 2. A device of the class described,consisting of a'pair of oppositely tapered casing members detachablysecured together at their larger ends, each of said casing membershaving communication near its outer end with an explosion chamber of aninternal combustion engine, a hollow plug located in each of the casingmembers and externally tapered in the same direction as said members,said plugs being spaced apart at their adjacent ends but incommunication with one another, each of said plugs having a spacedconvolute rib on its outer surface in contact with the wall of thecasing in which it is located, a pipe leading from a supply of heat andcommunicating at one of its ends with the end of one of said plugs, anda pipe communicating at one of its ends with the casing between theadjacent ends of the plugs and at its other end with a supply ofexplosive mixture.

3. A device of the class described, consisting of a casing tapered fromits middle portion toward each of its ends and having communication neareach of its ends with an explosion chamber of an internal combustionengine, a pair of hollow externally tapered plugs communicating with oneanother and located within the casing with their tapered portionslocated in the same direction as the tapered portions of the casing,each of said plugs having an opening in its outer end and each providedon its outer surface with a convolute channel, the outer surface of thesaid channels being in contact with the easing, a pipe leading from asupply of heat and communicating at one of its ends with the end of oneof said plugs, and another pipe communicating at one of its ends withthe casing between the adjacent ends of the plugs and at its other endwith a supply of explosive mixture.

4. A device of the class described, consisting of a casing tapered fromits middle portion toward each of its ends and having communication ateach of its ends with an explosion chamber-of an internal combustionengine, a pair of hollow externally tapered plugs communicating with oneanother at their adjacent ends but spaced from each other at said ends,said plugs located within the casing with their tapered portions locatedin the same direction as the tapered portions of the casing, each ofsaid plugs having an opening in its outer end and provided on its outersurface with a spaced convolute rib in contact with the walls of thecasing, said ribs being internally channeled, a fan mounted for rotationbetween the adjacent ends of the plugs, a pipe leading from a supply ofheat and communicating at one of its ends with the end of one of saidplugs, and another pipe communicating at one of its ends with the casingbetween the .adjacent ends of the plugs and at its other end with asupply of explosive mixture.

BARRY IVOR.

